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  • 1995-1999  (57)
Collection
Language
Year
  • 1
    Series available for loan
    Series available for loan
    Leipzig : Inst. für Meteorologie der Univ. [u.a.]
    Associated volumes
    Call number: ZS-265(13)
    In: Wissenschaftliche Mitteilungen aus dem Institut für Meteorologie der Universität Leipzig und dem Institut für Troposphärenforschung e.V. Leipzig
    Type of Medium: Series available for loan
    Pages: 159 S.
    ISBN: 3980611728
    Series Statement: Wissenschaftliche Mitteilungen aus dem Institut für Meteorologie der Universität Leipzig und dem Institut für Troposphärenforschung e.V. Leipzig 13
    Language: German
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Thirty-one sequence tagged sites and a highly polymorphic short tandem repeat polymorphism have been isolated from 5q34–q35 and integrated into the yeast artificial chromosome (YAC) contig of 5q34–q35. In addition, four genes (MSX2, CSX, DRDI, andCLI00) and a pseudogene (GLUT6) were localized on this map. The high density of new markers in the region allowed further refinement of the YAC contig of distal 5q. This is a prerequisite for the conversion of this YAC into a cosmid contig.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Human genetics 〈Berlin〉 96 (1995), S. 113-115 
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Four cases of Crouzon syndrome, one familial and three sporadic, were investigated for mutations in exon B of the fibroblast growth factor receptor 2 (FGFR2) gene. In the familial case, a mutation was found at codon 340 that exchanged tyrosine for histidine. Mutations at codon 342, detected in the three sporadic cases, replaced a cysteine by another amino acid. While three of the mutations have been described before, the fourth mutation, a C→G transversion at codon 342 in one of the sporadic cases, has not been recognized previously. Compilation of all exon B mutations in Crouzon syndrome described to date revealed that 6 of the 8 sporadic and 2 of the 9 familial cases have mutations in codon 342. These mutations caused the substitution of cysteine for another amino acid. Given that a mutation in codon 342 was found in 8 out of 17 cases and that in 9 cases the mutation occurred at five additional positions, codon 342 of exon B of the FGFR2 gene may be predisposed to mutations in Crouzon syndrome.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Human genetics 〈Berlin〉 97 (1996), S. 701-704 
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract H-Y antigen is defined as a male histocompatibility antigen that causes rejection of male skin grafts by female recipients of the same inbred strain of rodents. Male-specific, or H-Y antigen(s), are also detected by cytotoxic T cells and antibodies. H-Y antigen appears to be an integral part of the membrane of most male cells. In addition, H-Y antibodies detect a soluble form of H-Y that is secreted by the testis. The gene (Smcy/SMCY) coding for H-Y antigen detected by T cells has been cloned. It is expressed ubiquitously in male mice and humans, and encodes an epitope that triggers a specific T-cell response in vitro. Additional epitopes coded for by different Y-chromosomal genes are probably required in vivo for the rejection of male grafts by female hosts. The molecular nature of H-Y antigen detected by antibodies on most male cells is not yet known. Testis-secreted, soluble H-Y antigen, however, was found to be identical to Müllerian-inhibiting substance (MIS). MIS cross-reacts with H-Y antibodies and identical findings were obtained for soluble H-Y antigen and MIS, i.e., secretion by testicular Sertoli and, to a lesser degree, ovarian cells, binding to a gonad-specific receptor, induction of gonadal sex reversal in vitro and, in cattle, in vivo. H-Y antisera also detect a molecule or molecules associated with the heterogametic sex in nonmammalian vertebrates. Molecular data on this antigen or antigens are not yet available.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1122
    Keywords: Key words:Foreign exchange rates, intra-daily, heterogeneous, distribution ¶JEL classification:F31, G15, E44 ¶Mathematics Subject Classification (1991):90-02, 62-07, 62P20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Notes: Abstract. This paper presents stylized facts concerning the spot intra-daily foreign exchange markets. It first describes intra-daily data and proposes a set of definitions for the variables of interest. Empirical regularities of the foreign exchange intra-daily data are then grouped under three major topics: the distribution of price changes, the process of price formation and the heterogeneous structure of the market. The stylized facts surveyed in this paper shed new light on the market structure that appears composed of heterogeneous agents. It also poses several challenges such as the definition of price and of the time-scale, the concepts of risk and efficiency, the modeling of the markets and the learning process.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 25 (1999), S. 935-941 
    ISSN: 1573-1561
    Keywords: Antifungal ; diketopiperazine ; Cyphomyrmex minutus ; fungus-growing ant ; symbiosis ; Tyridiomyces formicarum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The attine fungus Tyridiomyces formicarum, the symbiont of the fungus-growing ant Cyphomyrmex minutus, produces several antifungal diketopiperazines. This represents the first identification of antifungal compounds from an attine symbiont and contradicts previous suggestions that attine fungi do not produce metabolites with antifungal activity. T. formicarum probably produces antifungal compounds in defense (1) against other fungi that invade the gardens and escape the weeding activity of the ants, or (2) against ant-pathogenic fungi that could harm the host ants. Fungi cultivated by fungus-growing ants may represent a rich source of additional bioactive metabolites.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 67 (1995), S. 783-786 
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 979-981 
    ISSN: 0044-2313
    Keywords: Tetraphenylphosphonium hexathiocyclodiarsenate(III) ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Cyclic Thioarsenate(III) (PPh4)2As2S6The reaction of Na3AsS4 with tetraphenylphosphonium chloride in ethanol or dimethylformamide proceeds with an intramolecular redox reaction, yielding (PPh4)2As2S6. According to its X-ray crystal structure analysis (4071 reflections, R = 0.070) the anion consists of a six-membered ring of two As and four S atoms in the chair conformation. The As atoms occupy the ring positions 1 and 3, and each of them has an additional terminal S atom.
    Notes: Bei der Umsetzung von Na3AsS4 mit Tetraphenylphosphoniumchlorid in Ethanol oder Dimethylformamid tritt eine intramolekulare Redoxreaktion ein, bei der (PPh4)2As2S6 entsteht. Nach der Röntgenstrukturanalyse (4071 beobachtete Reflexe, R = 7,0%) besteht das Anion aus einem sechsgliedrigen Ring aus zwei As und vier S-Atomen in Sesselkonformation; die beiden As-Atome nehmen die Stellungen 1 und 3 ein und tragen jeweils noch ein terminales Schwefelatom.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 541-545 
    ISSN: 0044-2313
    Keywords: Dimagnesium trimolybdate(IV) ; molybdenum oxide ; preparation ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: η-Mo4O11 and Mg2Mo3O8: a New Way of Synthesis and Refinement of their Crystal StructuresMg2Mo3O8 was obtained by solid state reaction of MgI2 and MoO3 (1:1) at 200°C and subsequent crystallization at 800°C. Under the same conditions, ZnI2 and MoO3 only yielded rather impure Zn2Mo3O8; however, when ZnI2 or CdI2 and MoO3 were taken in a molar ratio of 1:2, well crystallized η-Mo4O11 was obtained. The known crystal structures of Mg2Mo3O8 and η-Mo4O11 were refined with new X-ray diffraction data (R = 0.030 and 0.059, respectively). The kind of twinning of monoclinic η-Mo4O11 is discussed.
    Notes: Durch Festkörperreaktion von MgI2 und MoO3 (1:1) bei 200°C und anschließender Kristallisation bei 800°C entsteht Mg2Mo3O8. Mit ZnI2 entsteht unter den gleichen Bedingungen nur stark verunreinigtes Zn2Mo3O8; beim Einsetzen von ZnI2 oder CdI2 und MoO3 im Molverhältnis von 1:2 wird dagegen gut kristallisiertes η-Mo4O11 erhalten. Die bekannten Kristallstrukturen von Mg3Mo8O8 und η-Mo4O11 wurden mit neuen Meßdaten verfeinert (R = 3,0 bzw. 5,9%). Die Art der Zwillingsbildung des monoklinen η-Mo4O11 wird diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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